Described is the development of the Educational Based Appraisal System, a model whereby educational diagnosticians and teachers in Collin County (Texas) could work together in developing effective individual educational programs for exceptional children. Sections cover the following topics: statement of the problem, conceptualizing a solution, developing a practicum design (which includes referral; screening; data analysis; comprehensive individual assessment; involvement of an admission, review, and dismissal committee; dissemination of the written educational plan; and program evaluation), ascertaining the required inputs, executing a practicum, evaluating results of the practicum, suggesting further applications, and following up. It is noted that the model proved to be a useful quality control mechanism. Appended are tables showing the effectiveness rating of special education supportive services in Collin County and effectiveness rating of educational plan forms. (SBH)